The company’s system, which will have 60 megawatt hours of
storage capacity, will be set up at a substation to expand the
utility’s grid capacity, according to the paper.

Mitsuyo Tsuruta, a Sumitomo Electric spokeswoman, declined
to comment, saying that the Osaka-based company isn’t the source
of the information.

The Ministry of Economy, Trade and Industry said in April
that it will set up a storage system after the utility received
applications for large-scale solar projects that would exceed
the grid’s capacity.